"Craig A. James" <cjames@xxxxxxxxxxxxxxxx> writes: > Thanks to both for your answers. But no -- It's for new posts. In fact, when writing the email that started this thread, it was only to pgsql-performance@xxxxxxxxxxxxxx (I double-checked by using emacs on my Thunderbird "Sent" folder), yet I still got another "undeliverable" reply along with your message: >> This is an automatically generated Delivery Status Notification. >> Delivery to the following recipients failed. >> martin@xxxxxxxxxxxxxxxxxxxxx This means that usaemail.enpocket.com has seriously misconfigured mail software --- it's bouncing undeliverable messages to the From: address rather than to the envelope sender (which will be pgsql-performance-owner for a message coming through the pgsql-performance list). This is generally considered sufficiently unfriendly behavior that proof of it is grounds for instant ejection from a mailing list, because the From: address is someone who has no control over where the mailing list tries to deliver to. Certainly it's grounds for ejection from any PG list. Send the bounce message with full headers to the list admin (Marc Fournier, scrappy at postgresql.org) and martin@xxxxxxxxxxxxxxxxxxxxx will soon be an ex-subscriber. regards, tom lane